Mugen no Ryvius

Kouji Aiba joins the Liebe Delta space-training station, only for sabotage to destroy it and leave hundreds of students without the adults responsible for them. The survivors escape aboard the mysterious Ryvius and must operate it themselves while facing both hazardous space and forces pursuing the vessel.

The ship's power cannot solve the tensions within its crew. Scarcity, fear, and personal grievances divide the students as competing groups struggle to impose order. Amid his strained relationship with his brother Yuki, Kouji discovers that preserving trust and humanity may be as difficult as surviving the attacks outside.